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Date: Mon, 18 Jul 2022 22:35:31 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Ian Kent <raven@...maw.net>
Cc: 0day robot <lkp@...el.com>, LKML <linux-kernel@...r.kernel.org>,
linux-fsdevel@...r.kernel.org, lkp@...ts.01.org,
Al Viro <viro@...iv.linux.org.uk>,
Andrew Morton <akpm@...ux-foundation.org>,
Siddhesh Poyarekar <siddhesh@...plt.org>,
David Howells <dhowells@...hat.com>,
Miklos Szeredi <miklos@...redi.hu>,
Carlos Maiolino <cmaiolino@...hat.com>
Subject: [vfs] f756fe900f: canonical_address#:#[##]
Greeting,
FYI, we noticed the following commit (built with gcc-11):
commit: f756fe900f17af85c3f4bafc9b9e996bcc0fbeb1 ("[REPOST PATCH v2] vfs: parse: deal with zero length string value")
url: https://github.com/intel-lab-lkp/linux/commits/Ian-Kent/vfs-parse-deal-with-zero-length-string-value/20220708-094030
base: https://git.kernel.org/cgit/linux/kernel/git/viro/vfs.git for-next
patch link: https://lore.kernel.org/linux-fsdevel/165724435867.30814.6980005089665688371.stgit@donald.themaw.net
in testcase: xfstests
version: xfstests-x86_64-c1144bf-1_20220711
with following parameters:
disk: 4HDD
fs: ext2
test: ext4-group-02
ucode: 0xec
test-description: xfstests is a regression test suite for xfs and other files ystems.
test-url: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git
on test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz with 32G memory
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>
[ 380.748272][ T5965] EXT4-fs (sda4): mounting ext3 file system using the ext4 subsystem
[ 380.856453][ T5993] EXT4-fs: journaled quota format not specified
[ 380.879248][ T5997] EXT4-fs (sda4): mounting ext3 file system using the ext4 subsystem
[ 380.911204][ T6003] EXT4-fs: journaled quota format not specified
[ 380.924796][ T6007] EXT4-fs: journaled quota format not specified
[ 380.964372][ T6012] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
[ 380.975568][ T6012] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
[ 380.983810][ T6012] CPU: 1 PID: 6012 Comm: mount Tainted: G S I 5.19.0-rc2-00001-gf756fe900f17 #1
[ 380.993786][ T6012] Hardware name: Dell Inc. OptiPlex 7040/0Y7WYT, BIOS 1.1.1 10/07/2015
[ 381.001854][ T6012] RIP: 0010:ext4_parse_param (kbuild/src/consumer/fs/ext4/super.c:2109)
[ 381.007414][ T6012] Code: 49 8d 7f 10 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 0b 1b 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 6f 10 4c 89 ea 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 ff 1e 00 00
All code
========
0: 49 8d 7f 10 lea 0x10(%r15),%rdi
4: 48 89 fa mov %rdi,%rdx
7: 48 c1 ea 03 shr $0x3,%rdx
b: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
f: 0f 85 0b 1b 00 00 jne 0x1b20
15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
1c: fc ff df
1f: 4d 8b 6f 10 mov 0x10(%r15),%r13
23: 4c 89 ea mov %r13,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
2a:* 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction
2e: 4c 89 ea mov %r13,%rdx
31: 83 e2 07 and $0x7,%edx
34: 38 d0 cmp %dl,%al
36: 7f 08 jg 0x40
38: 84 c0 test %al,%al
3a: 0f 85 ff 1e 00 00 jne 0x1f3f
Code starting with the faulting instruction
===========================================
0: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax
4: 4c 89 ea mov %r13,%rdx
7: 83 e2 07 and $0x7,%edx
a: 38 d0 cmp %dl,%al
c: 7f 08 jg 0x16
e: 84 c0 test %al,%al
10: 0f 85 ff 1e 00 00 jne 0x1f15
[ 381.026823][ T6012] RSP: 0018:ffffc900036dfac0 EFLAGS: 00010246
[ 381.032731][ T6012] RAX: dffffc0000000000 RBX: ffffffff83ba35c0 RCX: 0000000000000000
[ 381.040539][ T6012] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc900036dfc00
[ 381.048348][ T6012] RBP: 1ffff920006dbf5c R08: 0000000000000001 R09: ffffffff83ba35d4
[ 381.056158][ T6012] R10: ffffed110d8af749 R11: 0000000000000001 R12: ffff8881acdfbb00
[ 381.063968][ T6012] R13: 0000000000000000 R14: ffff888863e19e00 R15: ffffc900036dfbf0
[ 381.071791][ T6012] FS: 00007fb9236a2840(0000) GS:ffff88871fa80000(0000) knlGS:0000000000000000
[ 381.080553][ T6012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 381.086977][ T6012] CR2: 00007fb9239e1830 CR3: 00000002734e8003 CR4: 00000000003706e0
[ 381.094787][ T6012] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 381.102595][ T6012] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 381.110403][ T6012] Call Trace:
[ 381.113536][ T6012] <TASK>
[ 381.116324][ T6012] ? note_qf_name+0x300/0x300
[ 381.121452][ T6012] vfs_parse_fs_param (kbuild/src/consumer/fs/fs_context.c:149 kbuild/src/consumer/fs/fs_context.c:129)
[ 381.126319][ T6012] vfs_parse_fs_string (kbuild/src/consumer/fs/fs_context.c:192)
[ 381.131188][ T6012] ? vfs_parse_fs_param (kbuild/src/consumer/fs/fs_context.c:170)
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
sudo bin/lkp install job.yaml # job file is attached in this email
bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
sudo bin/lkp run generated-yaml-file
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
--
0-DAY CI Kernel Test Service
https://01.org/lkp
View attachment "config-5.19.0-rc2-00001-gf756fe900f17" of type "text/plain" (167550 bytes)
View attachment "job-script" of type "text/plain" (5816 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (25092 bytes)
View attachment "xfstests" of type "text/plain" (102566 bytes)
View attachment "job.yaml" of type "text/plain" (4547 bytes)
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